At e Bay, we're more than a global ecommerce leader — we’re changing the way the world shops and sells. Our platform empowers millions of buyers and sellers in more than 190 markets around the world. We’re committed to pushing boundaries and leaving our mark as we reinvent the future of ecommerce for enthusiasts.

Our customers are our compass, authenticity thrives, bold ideas are welcome, and everyone can bring their unique selves to work — every day. We're in this together, sustaining the future of our customers, our company, and our planet.

Join a team of passionate thinkers, innovators, and dreamers — and help us connect people and build communities to create economic opportunity for all.

The Core AI Division at e Bay builds and scales the next generation of intelligent systems that power personalized, efficient, and secure shopping experiences for millions of users worldwide. We work at the intersection of large-scale engineering and advanced research, shaping how AI enhances the future of commerce.

We’re seeking a Senior Fullstack Engineer who is passionate about creating world-class AI solutions and thrives in collaborative, fast-paced environments. This is an exciting opportunity to work with a highly visible, cross-functional team at the forefront of AI innovation within e Bay.

As a Senior Fullstack Engineer, you’ll collaborate with Software Engineers, Researchers, and Data Engineers across the entire AI lifecycle — from early experimentation and prototyping to deploying production-grade systems that support millions of users globally. You will focus on Generative AI systems, intelligent agents, and the foundational infrastructure that enables these technologies at scale.

What You Will Accomplish

• Design, build, and optimize large-scale Generative AI and agent-based systems that enable intelligent, adaptive, and efficient ecommerce experiences.
• Lead development of agent-led user experiences, including systems leveraging task decomposition, tool use, memory, and dynamic planning.
• Advance e Bay’s internal GenAI platform by developing reusable components, APIs, and frameworks that accelerate the creation of AI-powered applications.
• Monitor and improve performance, reliability, and responsible AI usage of models and agents in production.
• Collaborate cross-functionally with researchers, data engineers, and designers to bridge experimentation and deployment with measurable business impact.
• Drive innovation and iteration through experimentation, peer collaboration, and integration of the latest advances in AI/ML and intelligent agents.

What You Will Bring

• 8 years of professional experience in software engineering, with a strong full-stack background.

• Proven expertise in back-end development using JVM languages (Java / Kotlin / Scala) and front-end development with modern JavaScript/TypeScript.

• Hands-on experience with modern frameworks and platforms, including Spring Boot, React, Docker, Kubernetes and GraphQL.

• A growth mindset and willingness to work beyond your comfort zone, continuously learning and adapting to new technologies and problem domains.

• Experience mentoring junior engineers, setting engineering best practices, and raising the overall quality and impact of the team.

Additional Details

eBay is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, sex, sexual orientation, gender identity, veteran status, and disability, or other legally protected status. If you have a need that requires accommodation, please contact us at talentebay.com. We will make every effort to respond to your request for accommodation as soon as possible. View our accessibility statement to learn more about eBay's commitment to ensuring digital accessibility for people with disabilities.

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